A. Write a PHP script to calculate the area of a rectangle using arithmetic operators.

$length = 10;

$width = 5;

$area = $length * $width;

echo "Area of rectangle: $area\n";

Area of rectangle: 50

B. Implement a script that converts currency from one denomination to another using arithmetic operators.

$usd = 100;

$conversion_rate = 0.88;

$eur = $usd * $conversion_rate;

echo "Equivalent in EUR: $eur\n";

Equivalent in EUR: 88

A. Track the progress of a fundraising campaign by updating the donation total dynamically using combined assignment operators.

$total_donation = 500;

$new_donation = 50;

$total_donation += $new_donation;

echo "Total donation: $total_donation\n";

Total donation: 550

B. Implement a voting system where candidate votes are incremented based on user input.

// B. Voting system

$candidate1_votes = 100;

$candidate2_votes = 80;

$user_vote = 1;

$candidate1_votes += $user_vote;

echo "Candidate 1 votes: $candidate1_votes\n";

Candidate 1 votes: 101

A. Compare the performance of two athletes in a race and determine the winner using comparison operators.

$athlete1_time = 9.81;
$athlete2_time = 9.79;
$winner = ($athlete1_time < $athlete2_time) ? "Athlete 1" : "Athlete 2";

echo "Winner: $winner\n";

Winner: Athlete 2

B. Evaluate the efficiency of two algorithms based on their execution times using comparison operators.

$algorithm1_time = 20;
$algorithm2_time = 15;
$faster_algorithm = ($algorithm1_time < $algorithm2_time) ? "Algorithm 1" : "Algorithm 2";

echo "Faster algorithm: $faster_algorithm\n";

Faster algorithm: Algorithm 2

A. Calculate the factorial of a number using postfix increment/decrement operations.

$n = 5;

$factorial = 1;

for ($i = 1; $i <= $n; $i++) {

$factorial *= $i;

}

echo "Factorial of $n: $factorial\n";

Factorial of 5: 120

B. Simulate the movement of a vehicle along a track using prefix increment/decrement operations.

$position = 0;

$distance = 10;

$position += $distance;

echo "Final position of vehicle: $position\n";

Final position of vehicle: 10

A. Determine eligibility for a discount based on purchase amount and customer loyalty using logical operators.

// A. Determine discount eligibility

$purchase_amount = 150;

$loyalty_member = true;

$eligible_discount = ($purchase_amount > 100 && $loyalty_member) ? "Eligible" : "Not eligible";

echo "Discount eligibility: $eligible_discount\n";

Discount eligibility: Eligible

B. Design a decision-making system for a chatbot to respond to user queries using logical operators.

$user_query = "weather";

$response = ($user_query == "weather") ? "Today's weather is sunny." : "I don't understand your

query.";

echo "Chatbot response: $response\n";

Chatbot response: Today's weather is sunny.